D2D Communication Timing Conflict Compensation
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Solution Overview
Problem
Device-to-device (D2D) communication systems face timing conflicts when a receiving wireless device transitions between transmitting and receiving modes, leading to incomplete or missed data reception due to synchronization issues and propagation delays.
Innovation Solution
The system adjusts D2D communication by dropping or including null information in specific symbols, or modifying the timing of D2D communication bursts to compensate for timing conflicts, ensuring seamless data transfer during mode transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the receiving wireless device transitions between transmitting mode and receiving mode, then the device can perform bidirectional communication, but timing conflicts occur causing incomplete data reception
Solution Approach 1:
The system performs preliminary actions by dropping or including null information in specific symbols before the timing conflict occurs, and by adjusting the timing of D2D communication bursts in advance, ensuring the receiving device is properly prepared to receive data during mode transitions without experiencing timing conflicts
Solution Approach 2:
The system changes timing parameters of the D2D communication by adjusting when communication bursts are transmitted and received, modifying symbol timing to align with the receiving device's mode transition schedule, thereby resolving timing conflicts and ensuring complete data reception
2Device complexity
If D2D communication timing is not adjusted during mode transitions, then the communication system is simpler to implement, but data loss occurs due to synchronization issues
Solution Approach 1:
The system applies local quality by making targeted adjustments only in specific symbols where timing conflicts occur, rather than fundamentally changing the entire communication system. Null information is inserted or dropped only in affected time slots, maintaining overall system simplicity while preventing data loss during critical transition periods
Solution Approach 2:
The system uses null information as an intermediary element to bridge the timing gap during mode transitions. These null symbols act as placeholders that allow the receiving device to switch modes without losing synchronization, effectively mediating between the transmitting and receiving operations to prevent data loss
3Productivity
If the receiving device switches modes quickly to reduce transition time, then communication efficiency improves, but timing conflicts worsen due to synchronization loss
Solution Approach 1:
The system performs preliminary timing adjustments by modifying D2D communication burst timing before the receiving device completes its mode transition, ensuring that data transmission is synchronized with the device's reception window even when transitioning quickly, thus maintaining both efficiency and synchronization accuracy
Data Source
AI summary
A method of compensating for transmitting to multiple devices during device-to-device (D2D) communications may include determining that a receiving wireless device of a device-to-device (D2D) pair may experience a timing conflict. The timing conflict may be with respect to the receiving wireless device receiving at least a portion of a D2D communication transmitted by a transmitting wireless device of the D2D pair while the receiving wireless device is transitioning between a transmitting mode and a receiving mode. The method may also include adjusting the D2D communication to compensate for the timing conflict.